I dunno about that.
Before there were spam bots, there were AI chatbots. People have been trying to write AI chatbots that would fool people since before you had a computer. A friend of mine is into AI pretty big... for pure entertainment value (non profit).
Try looking around at
www.alicebot.org for one of the better engines...
After looking over that site I'd have to say its dead.. ??? Not sure how it could be considered the AI-BOT mecca.